Slow H264 1080P@60fps Decoding on Android Lollipop 5.0.2 SabreSD

I'm developing a JAVA RTP Streaming App for a company project, which should be capable of joining the Multicast Server and receive the RTP Packets.Later I use the H264 Depacketizer to recreate the a complete frame from the NAL FU (Keep append the data until End Bit & Marker Bit set )

I want to decode and display a raw h264 video byte stream in Android and therefore I'm currently using the MediaCodec classes with Hardware Decoder configured.

The Application is Up and running for the Jeallybean (API 17). Various Resolutions which I need to decodes are :480P at 30/60 FPS720P/I at 30/60 FPS1080P/I at 30/60 FPS

Recently, Due to System Upgrade we are porting the App to Android L Version 5.0.2. My App is not capable of playing the high resolutions videos like 720p@60fps and 1080p@60fps.